2 Criticality Levels Criticality levels are determined by the service wner and are used t classify the criticalness f an IT system* t a business prcess. The level selected defines the necessary business cntinuity prcedures, methds, and testing requirements. Cre Infrastructure: IT systems that must be functining and are cnsidered cre cmpnents, which will need t be peratinal befre ther dependent systems can perfrm as they are intended. Examples f cre systems include, but are nt limited t; electricity, the data netwrk, netwrk services such as DNS and DHCP, and varius authenticatin systems such as Active Directry. Immediate recvery is required t prevent substantial interruptin f University peratins. Systems shuld have a maximum dwntime f 2 hurs r less. Critical: IT systems which are essential t supprt University business peratins. Lss r failure f these systems will have an extreme impact n business peratins. Systems shuld have a maximum dwntime f 4 hurs r less. High: IT systems which are crucial t supprt primary University business peratins. Lss r failure f these systems will have a significant impact n business peratins. Systems shuld have a maximum dwntime f 24 hurs r less. Medium: IT systems which are imprtant t University business peratins. Lss r failure f these systems will have a mdest impact n business peratins. Systems shuld have a maximum dwntime f 72 hurs r less. Lw: IT systems which imprve the effectiveness r efficiency f University peratins. An extensive lss r failure f these systems will have a negligible impact n business peratins. *An IT system is a hardware r virtual cmputing envirnment that is installed r cnfigured t prvide, share, stre, r prcess infrmatin fr multiple users r, that cmmunicates with ther systems t transmit data r prcess transactins. Business Cntinuity Prcedures Different services are ffered t prperly dcument and utline business cntinuity prcedures. Each f these items define different prcedures and requirements necessary t prperly evaluate and restre an IT system. System Business Cntinuity Classificatin (Jan-12) 2

3 Business Impact Analysis (BIA) The purpse f the BIA is t identify and priritize system cmpnents by crrelating them t the missin/business prcess(es) the system supprts, and using this infrmatin t characterize the impact n the prcess(es) if the system was unavailable. System Recvery Prcedures (SRP) System recvery prcedures (SRP) prvide general prcedures fr the recvery f a system frm backup media r ther surces. Business Cntinuity Methds Business Cntinuity Methds define the system availability and data recvery strategies. System Availability: Cntinuus Availability: A system that is created with a gal f n scheduled r unscheduled dwntime. Cntinuus availability systems can nly be reliant upn ther systems that are unremitting. Alternate facilities, nt physically lcated within the same building, will be used t ensure that n lcal disruptins interfere with the system s cntinuus availability. Real time synchrnizatin between the sites is used t rute data t bth the primary site and the alternate facility(ies). Cntinuusly available systems cnsist f hardware and sftware designed t prtect against cmpnent and system-level failures at any pint in time, with an understanding that the system will always be active. High Availability: A system that can quickly recver frm a failure by way f autmatin built int the system. There may be a small amunt f dwntime while ne system switches ver t anther, but prcessing will cntinue. There shuld be a gal f n unscheduled utages r dwntimes. High availability systems can nly be reliant n unremitting systems r ther systems that have n lwer availability than high. Alternate facilities, nt physically lcated within the same building, will be used t ensure that n lcal disruptins interfere with the system s high availability. Near real time synchrnizatin between the tw sites is used t mirrr the data envirnment f the riginal site. The alternate site will have hardware and system resurce cmpnents; netwrking equipment with an active cnnectin; and the resurces needed t recver the business prcesses impacted by the system disruptin. Recverable: Redundant infrastructure cmpnents, such as web and file servers, which have data replicatin. The facility will have backups n hand, but they may nt be current r culd be incmplete. A full backup shuld be dne System Business Cntinuity Classificatin (Jan-12) 3

4 first with either an incremental r differential backup cmpleted n a set schedule. The system will recver by manual interventin which will cause sme dwntime as tlerable. An alternate facility (pssibly smaller in scale) with the equipment and resurces t recver the business functins affected by the ccurrence f a disaster may be used. Reliable: Nn-redundant cmpnents that have n prtectin r ht-swappable hardware. IT staff will restre them eventually after majr failure, but the business des nt depend n them. System will have backups, but they may nt be current r culd be incmplete. An alternate facility wuld nt be needed in this instance. Data Recvery Strategies: Cntinuus backup: Backup f cmputer data by autmatically saving a cpy f every change made t that data in real time r near real time. It allws fr the data t be restred at any pint in time. The data will be lcated in different physical lcatins t ensure data availability in the event f a disruptin. Full backup: A backup in which all f a defined set f data bjects are cpied, regardless f whether they have been mdified since the last backup. Incremental backup: An incremental backup stres all files that have changed since the last full, differential r incremental backup. Differential backup: A backup in which data bjects mdified since the last full backup r incremental backup are cpied. Testing and Exercises The purpse f testing is t cnfirm the business cntinuity slutin satisfies the rganizatin's recvery requirements. Plans may fail t meet expectatins due t insufficient r inaccurate recvery requirements, slutin design flaws, r slutin implementatin errrs. Dcumentatin Review: Staff will individually review the plan fr accuracy and cmpleteness and ensure supprting dcumentatin fr critical systems is up t date. Business cntinuity dcumentatin shuld be reviewed in cnjunctin with system changes and updated if necessary. System Business Cntinuity Classificatin (Jan-12) 4

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